/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.rdf.model.test;

import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.Statement;
import org.apache.jena.rdf.model.StmtIterator;
import org.apache.jena.rdf.model.test.helpers.ModelHelper;
import org.apache.jena.rdf.model.test.helpers.TestingModelFactory;
import org.junit.Assert;

/**
 * A revamped version of the regression set-operation tests.
 */
public class TestModelSetOperations extends AbstractModelTestBase {
    private Model model2;

    public TestModelSetOperations(final TestingModelFactory modelFactory, final String name) {
        super(modelFactory, name);
    }

    @Override
    public void setUp() {
        super.setUp();
        model2 = createModel();
    }

    @Override
    public void tearDown() {
        super.tearDown();
        model2.close();
    }

    public void testDifference() {
        ModelHelper.modelAdd(model, "a P b; w R x");
        ModelHelper.modelAdd(model2, "w R x; y S z");
        final Model dm = model.difference(model2);
        for ( final StmtIterator it = dm.listStatements() ; it.hasNext() ; ) {
            final Statement s = it.nextStatement();
            Assert.assertTrue(model.contains(s) && !model2.contains(s));
        }
        for ( final StmtIterator it = model.union(model2).listStatements() ; it.hasNext() ; ) {
            final Statement s = it.nextStatement();
            Assert.assertEquals(model.contains(s) && !model2.contains(s), dm.contains(s));
        }
        Assert.assertTrue(dm.containsAny(model));
        Assert.assertTrue(dm.containsAny(model.listStatements()));
        Assert.assertFalse(dm.containsAny(model2));
        Assert.assertFalse(dm.containsAny(model2.listStatements()));
        Assert.assertTrue(model.containsAll(dm));

    }

    public void testIntersection() {

        ModelHelper.modelAdd(model, "a P b; w R x");
        ModelHelper.modelAdd(model2, "w R x; y S z");
        final Model im = model.intersection(model2);
        Assert.assertFalse(model.containsAll(model2));
        Assert.assertFalse(model2.containsAll(model));
        Assert.assertTrue(model.containsAll(im));
        Assert.assertTrue(model2.containsAll(im));
        for ( final StmtIterator it = im.listStatements() ; it.hasNext() ; ) {
            final Statement s = it.nextStatement();
            Assert.assertTrue(model.contains(s) && model2.contains(s));
        }
        for ( final StmtIterator it = im.listStatements() ; it.hasNext() ; ) {
            Assert.assertTrue(model.contains(it.nextStatement()));
        }
        for ( final StmtIterator it = im.listStatements() ; it.hasNext() ; ) {
            Assert.assertTrue(model2.contains(it.nextStatement()));
        }
        Assert.assertTrue(model.containsAll(im.listStatements()));
        Assert.assertTrue(model2.containsAll(im.listStatements()));

    }

    public void testUnion() {

        ModelHelper.modelAdd(model, "a P b; w R x");
        ModelHelper.modelAdd(model2, "w R x; y S z");
        final Model um = model.union(model2);
        Assert.assertFalse(model.containsAll(model2));
        Assert.assertFalse(model2.containsAll(model));
        Assert.assertTrue(um.containsAll(model));
        Assert.assertTrue(um.containsAll(model2));
        for ( final StmtIterator it = um.listStatements() ; it.hasNext() ; ) {
            final Statement s = it.nextStatement();
            Assert.assertTrue(model.contains(s) || model2.contains(s));
        }
        for ( final StmtIterator it = model.listStatements() ; it.hasNext() ; ) {
            Assert.assertTrue(um.contains(it.nextStatement()));
        }
        for ( final StmtIterator it = model2.listStatements() ; it.hasNext() ; ) {
            Assert.assertTrue(um.contains(it.nextStatement()));
        }
        Assert.assertTrue(um.containsAll(model.listStatements()));
        Assert.assertTrue(um.containsAll(model2.listStatements()));

    }
}
